We bought a demasoni cichlid at the LFS Saturday and he was very active until today. We found him "standing" against the side of the tank. He could be chased out of the position, but he kept moving back. You can see one patch of fuzz on the top edge of the second blue stripe (counting the head stripe) down.
We checked him out with a magnifying glass and he looks a little raggedy, and seemed to have some fungus looking threads on his side. When we put him in the QT we realized that he has brown on his sides, even on the blue stripes. It is about the color of the diatoms that inhabit the tank. He kinda looks fuzzy and his fins look somewhat ragged. Here are the best pics I could get of the brown on him.
Water parameters are
Ammonia 0
Nitrite 0
nitrate 40
PH 7.8
temp 80 F
he is the only recent addition. We are particularly concerned about him AND the other fish, two of whom are holding.
Can anyone give us any idea of what this might be and how to treat it?

We checked him out with a magnifying glass and he looks a little raggedy, and seemed to have some fungus looking threads on his side. When we put him in the QT we realized that he has brown on his sides, even on the blue stripes. It is about the color of the diatoms that inhabit the tank. He kinda looks fuzzy and his fins look somewhat ragged. Here are the best pics I could get of the brown on him.


Water parameters are
Ammonia 0
Nitrite 0
nitrate 40
PH 7.8
temp 80 F
he is the only recent addition. We are particularly concerned about him AND the other fish, two of whom are holding.
Can anyone give us any idea of what this might be and how to treat it?